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TIME-DOMAIN RESPONSES OF IMMERSING TUNNEL ELEMENT UNDER WAVE ACTIONS

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Journal of Hydrodynamics 2009年第6期21卷 739-749页

作者： CHEN zhi-jie WANG yong-xue WANG Guo-yu HOU yong State Key Laboratory of Coastal and Offshore Engineering Dalian University of Technology Dalian 116024 China CCCC-FHDI Engineering Co. Ltd Guangzhou 510230 China

The time domain responses of the tunnel element under wave actions during its immersion are investigated based on the linear wave diffraction theory. The integral equation is derived by using the time-domain Green function that satisfies the free water surface condition in the finite water depth, and is solved by the boundary element method. The motion equations of the tunnel element are solved by the fourth order Runge-Kutta method. A comparison between the computed and measured results reveals that the numerical model can effectively simulate the motion responses of the tunnel element and the cable tensions when the motions of the tunnel element are within some limit. Taking the tunnel element of 100 m in length, 15 m in width and 10 m in height as an example, the computational results of the motion responses of the tunnel element and the cable tensions in different immersing depths are obtained under different incident wave conditions.

关键词： Immersed tunnel time-domain response cable tension boundary element method

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PVC胶起泡原因分析及改善措施

现代涂料与涂装 2016年第10期19卷 64-66页

作者：潘晓铭商智勇李玉杰原伟伟北京奔驰汽车有限公司北京100176

根据实际生产过程中,车身的四门、机盖和后盖出现PVC胶起泡的情况,从PVC胶材料、输胶系统、人员操作和装焊板材等几个方面来查找问题原因,重点对起泡处板材进行了拆解分析和截面分析,结果表明,板材包边不紧实或折边胶填充不够是影响PVC... 详细信息

根据实际生产过程中,车身的四门、机盖和后盖出现PVC胶起泡的情况,从PVC胶材料、输胶系统、人员操作和装焊板材等几个方面来查找问题原因,重点对起泡处板材进行了拆解分析和截面分析,结果表明,板材包边不紧实或折边胶填充不够是影响PVC胶起泡的主要原因,通过临时措施和永久措施可以改善PVC胶起泡处质量和解决起泡问题。

关键词： PVC胶起泡原因分析措施

Tailored lithium metal/polymer electrolyte interface with LiTa_(2)PO_(8) fillers in PEO-based composite electrolyte

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Rare Metals 2022年第8期41卷 2826-2833页

作者： Bing Huang zhi-Hong Li yu-Mei Zhu yong Che Chang-An Wang Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education School of Materials Science and EngineeringTianjin UniversityTianjin300072China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing100084China Enpower Energy Corp. Beijing102600China

The unstable Li/PEO-based electrolyte interface in allsolid-state lithium metal batteries usually leads to high interfacial resistance,low Coulombie efficiency and fast lithium dendrites growth even under a low current *** interface composition directly determines the interfacial integrity,dynamic Li^(+)/e^(-)transport processes and the subsequent Li+plating/stripping behavior;thus,it is of significance to regulate the interphase to have better safety and higher energy density for all-solid-state lithium metal ***,by incorporation of Li^+conducting LiTa_(2) PO_(8) fillers in PEO-based polymer electrolyte.

关键词： electrolyte lithium interface

Discussion on position of China’s north-south transitional zone by comparative analysis of mountain altitudinal belts

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Journal of Mountain Science 2020年第8期17卷 1901-1915页

作者： KOU zhi-xiang YAO yong-hui HU yu-fan ZHANG Bai-ping State Key Laboratory of Resources and Environment Information System Institute of Geographic Sciences and Natural Resources ResearchCASBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China

The Qinling Mountains has always been regarded as an essential dividing line between the warm temperate zone and the subtropical zone in eastern China and plays a vital role in the geoecological pattern of ***,there is controversy about the specific location of this geographical boundary in the academic *** a product of the combined effects of zonal and non-zonal factors,the mountain altitudinal belts(MABs)can reflect both the horizontal zonality and the vertical zonality of vegetation *** the MAB information,we can not only profoundly understand the complex mountain system of QinlingDaba Mountains but can also judge its nature as a geographical boundary more ***,based on the comparative analysis of basal belt,dominant belt characteristics and belt structure characteristics of the MABs in Qinling-Daba Mountains,subtropical and temperate mountains,this paper analyzed the MAB differences and similarities among Qinling-Daba Mountains,subtropical and temperate typical mountains,to reveal the vegetation distribution characteristics in the north-south transitional *** results show that:(1)The MABs of the southern part of QinlingDaba Mountains(southern slope of the Daba Mountains)are the same or similar to those of the Subtropical Mountains,and the MABs of the northern part of Qinling-Daba Mountains(northern slope of the Qinling Mountains)are similar to those of the temperate *** it shows obvious transitional characteristics in the vast area between the northern slope of the Daba Mountains and the southern slope of the Qinling Mountains:the basal belts gradually transit from the evergreen broadleaved forest belt(basal belt in subtropical mountains)to the evergreen and deciduous broad-leaved mixed forest belt,and the dominant belts also transit from the evergreen broad-leaved forest belt to the evergreen and deciduous broad-leaved mixed forest belt or the deciduous broad-leaved forest belt.(2)The transi

关键词： Qinling-Daba Mountains Mountain altitudinal belt(MAB) North-south transitional zone Subtropical zone Warm temperate zone Vegetation

Novel treatment for post-orgasmic illness syndrome:a case report and literature review

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Asian Journal of Andrology 2022年第3期24卷 332-334页

作者： Tian-Bao Huang Jun-Jie yu yong-Jun Du zhi-yong Liu Department of Urology Northern Jiangsu People’s HospitalYangzhou UniversityYangzhou 225001China Department of Urology College of Clinical MedicineYangzhou UniversityYangzhou 225001China Department of Urology Shanghai Changhai HospitalSecond Military Medical UniversityShanghai 200433China

Dear Editor,Post-orgasmic illness syndrome(POIS)is a rare disorder affecting men,and is characterized by flu-like symptoms that appear immediately or within hours after *** 2002,Waldinger and Schweitzer1 reported the first two cases of POIS and subsequently proposed five preliminary diagnostic criteria for POIS.1,2 The symptoms were categorized into seven *** avoid these symptoms,patients with POIS tend to minimize the frequency of ejaculation and avoid sexual ***,POIS poses a severe mental and psychosocial burden on patients and negatively affects their quality of life by affecting schedules,dampening romantic prospects,and creating internal struggles to avoid eroticism.3 Previously,the main treatment strategies were focused on drug and hyposensitization therapies.

关键词： treatment illness affecting

Nonlinearity Correction of Fourier Transform Spectrometer in Solar Observation Using Simulated Annealing

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Research in Astronomy and Astrophysics 2023年第5期23卷 172-179页

作者： Ze-Yin Dong Xian-yong Bai Song Feng yuan-yong Deng Zi-Hang yu Wen-Tong Ao Xiao Yang zhi-yong Zhang zhi-Wei Feng Faculty of Information Engineering and Automation Kunming University of Science and TechnologyKunming 650500China Key Laboratory of Solar Activity National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China School of Astronomy and Space Science University of Chinese Academy of SciencesBeijing 101408China

A Fourier transform spectrometer(FTS)has been used to observe solar activities due to its ultra-high spectral ***,the FTS in-band spectra are usually distorted and some artifacts appear in out-of-band regions due to nonlinear ***,the FTS nonlinear problem must be *** this study,we proposed a novel method to correct the nonlinear effects using simulated *** simulated several nonlinear spectra to evaluate the performance of our *** calculated quadratic coefficients are extremely close to the given values,demonstrating that the method is effective and *** proposed method is further used to correct the blackbody and solar spectra with nonlinearity obtained by Bruker IFS-125HR installed at the Huairou Solar Observing Station,which is a pathfinder for the accurate infrared magnetic field measurements of the Sun *** the blackbody spectra,the nonlinearity in low-and high-frequency regions are corrected by 89.09%and 60.84%.The nonlinear correction of the solar spectra in the low-and high-frequency regions have reached 65.34%and 81.04%,*** results prove that our method can correct the nonlinear problem to improve the data accuracy.

关键词： Sun infrared-instrumentation interferometers-techniques interferometric

Coordinating control of multiple rigid bodies based on motion primitives

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Acta Mechanica Sinica 2012年第2期28卷 482-489页

作者： Fan Wu zhi-yong Geng State Key Laboratory for Turbulence and Complex Systems Peking University100871 BeijingChina

This paper studies the problem of coordinated motion generation for a group of rigid bodies. Two classes of coordinated motion primitives, relative equilibria and ma- neuvers, are given as building blocks for generating coordi- nated motions. In a motion-primitive based planning frame- work, a control method is proposed for the robust execution of a coordinated motion plan in the presence of perturba- tions. The control method combines the relative equilibria stabilization with maneuver design, and results in a close- loop motion planning framework. The performance of the control method has been illustrated through a numerical sim- ulation.

关键词： Coordinating control Motion plan execution Motion primitive. Relative equilibrium. Maneuver

Stabilization of coordinated motion for underwater vehicles

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Acta Mechanica Sinica 2011年第3期27卷 438-444页

作者： Fan Wu zhi-yong Geng State Key Laboratory for Turbulence and Complex Systems Peking University 100871 Beijing China

This paper presents a coordinating and stabilizing control law for a group of underwater vehicles with unstable dynamics. The coordinating law is derived from a potential that only depends on the relative configuration of the underwater vehicles. Being coordinated,the group behaves like one mechanical system with symmetry,and we focus on stabilizing a family of coordinated motions,called relative equilibria. The stabilizing law is derived using energy shaping to stabilize the relative equilibria which involve each vehicle translating along its longest（unstable） axis without spinning,while maintaining a relative configuration within the group. The proposed control law is physically motivated and avoids the linearization or cancellation of nonlinearities.

关键词： Underwater vehicles . Coordination .Relativeequilibria. Stabilization. Energy shaping

一短指畸形家系临床特征调查及ROR2基因突变分析

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中国优生与遗传杂志 2017年第1期25卷 104-106,F0002页

作者：王旭沙艳伟梅利斌纪智勇周裕林厦门市妇幼保健院福建厦门361000

目的研究福建省一个汉族B1型短指(趾)家系的临床特征及致病基因突变分析。方法在获得知情同意后对该家系成员进行病史采集及临床检查,对2例正常亲属、8例患者及50例正常对照组进行采血提取基因组DNA,扩增ROR2基因8号、9号外显子部分区域... 详细信息

目的研究福建省一个汉族B1型短指(趾)家系的临床特征及致病基因突变分析。方法在获得知情同意后对该家系成员进行病史采集及临床检查,对2例正常亲属、8例患者及50例正常对照组进行采血提取基因组DNA,扩增ROR2基因8号、9号外显子部分区域,产物进行一代测序。结果该家系短指(趾)为B1型,常染色体显性遗传;家系中15个成员8个患者发病,占总成员53.3%,患者在9号外显子存在c.2265C>A无义突变,与国内外报道家系突变位点一致。结论 B1型短指(趾)中ROR2基因9号外显子c.2265C>A为常见致病位点,可作为临床普查靶点。

关键词： B1型短指(趾) ROR2 基因